The formula for amperage is:
I = V / R
I = amperage, V = voltage, and R = resistance.
Also amperage can be found by using the following formulas.
I = P / V, Amps = Watts/Volts
I = sq root P/R, Amps = the square root of (power divided by resistance) watts/ohms.
There are a great many formulae for calculating current, but they all depend upon what other quantities are given to start with! Your question should be asking, "What is the formula for current, given the following quantities...?"
<<>>
The three popular formula for calculating amperage are I = E/R, I = W/E and I = the square root of W/R. Where I = amps, E = volts, R = resistance and W = watts.
An ampere is coulombs per second.
It is also voltage times resistance. (Ohm's law)
AnswerThere is no 'formula' for an ampere. An ampere is defined in terms of the force between two, parallel, current-carrying conductors. This is a definition, not a formula.
Not sure what you are talking about. Some formulae that involve current are (SI units in parentheses):
current = charge / time (amperes = coulombs / second)
Ohm's Law: voltage = current x resistance (volts = amperes x ohms)
Power dissipation: power = current squared x resistance (watts = amperes squared x ohms)
AnswerThere is no 'formula' for an ampere. An ampere is defined in terms of the force between two, parallel, current carrying conductors. This is a definition, not a formula.
It really depends on what information you already have. For example, if you know the voltage of the supply and the resistance of the load, then you could divide that voltage by the resistance. If you know the voltage of the supply and the power of the load, then you could divide the power by the voltage. If you know the power and the resistance of the load, then you could find the square root of the power divided by resistance. The list is endless.... well, not quite, but it's a fairly long list!!
Amperes are used to measure current. To find a measure of amperes in a system, simply divide the power in Watts in use by the voltage difference across the circuit.
Amps = Volts divided by resistance in ohms.
Watts divided by volts gives a rough measure of amperes.
The formula you are looking for is I = W/E
The ampere was named after André-Marie Ampère.
The numerical representation of one coulomb of charge moving past a point in a circuit per second is called an ampere.
A
Since kilo- means one thousand, there are one thousand amperes in a kilo-ampere, and there are 0.001 amperes in a kilo-ampere.
The formula you are looking for is I = W/E
There is no 'formula' which defines the ampere. The ampere is defined in terms of the resulting force between two parallel, current-carrying, conductors, due to the magnetic fields surrounding those conductors.
To obtain amperage from a formula you need at least two components. Formula for amperage are I = W/E, I = E/R and I = sq root of W/R.
That's like asking how many meters in a liter. Ampere and Volt are two DIFFERENT measurements. Ampere is how much electricity you are using, while volts are how much pressure the electricity is under(Think water). If you want to figure out how many amperes your appliance is using you could use this formula: P=UxI (Watt=Volt x Ampere) or U=RxI(Volt=Resistance x Ampere).
ampere is the unit in all the systems for electric current
Ampere, milliampere, microampere, nanoampere, picoampere.
In Andre Ampere's basement.
i think it is AMPERE itself.....
ampere temp and ampere fuse
Ampere or amp.
Andre Ampere didn't 'invent' the ampere. The unit for current was named many years after the death of Ampere, in his honour. The ampere is defined in terms of its magnetic effect -i.e. the resulting force between two, parallel, current-carrying conductors. It was Ampere who discovered the relationship between current and force.
The ampere was named after André-Marie Ampère.